//
//  XMGTabBar.m
//  百思不得解国内
//
//  Created by sunnyday on 16/5/16.
//  Copyright © 2016年 sunnyday. All rights reserved.
//

#import "XMGTabBar.h"

@interface XMGTabBar()

/**
 *  发布按钮
 */
@property (nonatomic , weak) UIButton *publishButton;
@end


@implementation XMGTabBar


- (instancetype)initWithFrame:(CGRect)frame
{
    
    if (self = [super initWithFrame:frame]) {
        
        //设置 tabbar 的背景图片
        [self setBackgroundImage:[UIImage imageNamed:@"tabbar-light"]];
        // 发布按钮
        UIButton *publishButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [publishButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_icon"] forState:UIControlStateNormal];
        [publishButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_click_icon"] forState:UIControlStateHighlighted];
        // frame
        publishButton.size = publishButton.currentBackgroundImage.size;
        [self addSubview:publishButton];
        self.publishButton = publishButton;
    }
    return self;
}



- (void)layoutSubviews
{
    [super layoutSubviews];
    
    CGFloat width = self.width;
    CGFloat height = self.height;
    
    //设置发布按钮的 frame
   
    self.publishButton.center = CGPointMake(width *0.5, height * 0.5);
    
    /**
     *  设置其他  按钮的frame
     */
    
    CGFloat buttonY = 0;
    CGFloat buttonW = width / 5;
    CGFloat buttonH = height;
    NSInteger index = 0;
    for (UIView *button  in self.subviews) {
        if (![button isKindOfClass:[UIControl class]] || button == self.publishButton) continue;
        
        // 计算 按钮的 x 值
        CGFloat buttonX = buttonW * ((index > 1)? (index + 1): index );
        button.frame = CGRectMake(buttonX, buttonY, buttonW, buttonH);
        // 增加索引
        index++;

        
        
            
            }
}

@end
